Guess I missed this post earlier. The reason why I like the harem endings is that I am a completionist and at the same time usually too lazy to replay every game multiple times, so harem endings give me an option to see most of the content in a single replay.
But yeah, harem ending would probably be a bit insane to attempt to make, especially with the number of possible partners in this game. I would really like an option of a threesome if possible though, especially with Rin (fuck train anyone?
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), though even that might be quite the undertaking due to all the possible combinations. Perhaps the best solution would be to limit the possible threesomes to only a few pre set combinations?
As for animations, I must say I never was a fan of them. I prefer well made static images/renders over them any day, especially since most such animations just seem awkward and anything but erotic to me...